Graham, a Jewish immigrant from Nazi Germany, passed away in a helicopter crash near Vallejo on October 25, 1991.

The exhibit features 250 objects of memorabilia that comes from the private Graham family archives, as well as lenders, including Carlos Santana.

Included are photographs, instruments and a large selection of original Fillmore concert posters, a treasure trove of psychedelic art. The exhibit delves into Graham's storied career as a music promoter as well as his journey to San Francisco, where his first job was as the business manager of the San Francisco Mime Troupe.